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Small elevation on the skin that contains no fluid but may develop pus
Papule
Characterized by flat, nonpalpable changes in skin color or elevations formed by fluid in a cavity
Primary Lesions
Thin, dry, or oily plate of epidermal flakes
Scale
Characterized by piles of material on the skin surface, such as a crust or scab, or by depressions in the skin surface such as an ulcer
Secondary Lesions
Means not harmful
Benign
Raised, inflamed papule with white or yellow center containing pus in the top of the lesion
Pustule
Large blister containing a watery fluid; like a vesicle
Bulla
Slightly raised or depressed area of the skin that forms as a result of the healing process related to injury or lesion
Scar or Cicatrix
Dead cells that form over a wound or blemish while healing
Crust
Means cancerous
Malignant
Abnormal mass; vary in shape, size, & color
Tumor
Closed, abnormally developed sac that contains pus, semifluid, or morbid matter, above or below the skin
Cyst & Tubercle
Open lesion on the skin or mucous membrane of the body; accompanied by loss of skin depth and possible weeping of fluids or pus
Ulcer
Skin sore or abrasion produced by scratching or scraping
Excoriation
Most common and least severe type of skin cancer; often appears as light, pearly nodules
Basal Cell Carcinoma
Small blister or sac containing clear fluid, lying within or just beneath the epidermis
Vesicle
Flat spot or discoloration on the skin
Macule
Small, brownish spot on the skin ranging in color from pale tan to brown or bluish black
Normal mole
Crack in the skin that permeates the dermis
Fissure
Squamous Cell Carcinoma
Itchy, swollen lesion that can be caused by a blow, scratch, insect bite, skin allergy, or sting of a nettle.
Wheal
Solid bump larger than 0.4 inches that can easily be felt
Nodule
Pink or flesh colored precancerous lesions that feel sharp or rough and are a result of sun damage
Actinic Keratosis
Thick scar resulting from excessive growth of fibrous tissue
Keloid
Most serious form of skin cancer; black or dark patches usually uneven in texture, jagged, or raised
Malignant Melanoma